Improvement in spark-extinguishers



.T. J. GILBERT.

SPARK EXTINGUISHER.

Patented March 27,1877.

N-PETERS. PHOTO LITNGFRAPHR WASHWGTON D C UNITED STATES PATENT DFFICEJOHN J. GILBERT, OF LEWISVILLE, INDIANA.

IMPROVEMENT IN SPARK-EXTINGUSHERS.

Specification forming part of Letters Patent No. 188,887, dated March27, 1877 application filed June 18, 1874.

To all whom it may concern:

Be it known that I, Join: J. GILBERT, of Lewisville, in the county ofHenry and State of Indiana, have invented a new and useful Improvementin Spark-Extinguishers, of which the following is a specification Theobject of my invention is to provide an eflicient means forextinguishing the sparks in-the uptakes of steam generators; and itconsists in injecting water from the feed-pump into the exhaust, whereit is vaporized, and so passes into the exhaust in the form of wet steamor fine spray, and there encounters and extinguishes the sparks.

In the annexed drawing, making part of this specification, Figure l isan elevation of a portable engine with my extinguisher attached, partlyin section. Fig. 2 is a transverse section.

The same letters are employed in all the figures in the indication ofidentical parts.

A represents the steam-generator. B is the engine standing on the tube0, which constitutes a bed-plate, forms part of the pipe for conveyingthe exhaust steam, and also serves as a heater. D is the pump, and E thewaterpipe, which, passing through the heater, feeds the boiler at E. Theexhaust steam passes into the heater around the coil of feed-water pipe,and thence into the uptake A of the steam-generator.

All these parts are in common use. I add to the water-pipe E a valve, F,by opening which water may be delivered through the pipe F, from thefeed-Water pipe E, and injected into the current of escaping steam.Mingling with this exhaust steam, it will form a very wet steam orvapor, and be ejected into the uptake through the pipe G. The saturationof the exhaust steam in the exhaust-pipe, by the water mingled with it,will be such that the sparks passing up through the uptake will-becompletely extinguished.

What I claim as my invention, and desire to secure by Letters Patent,is-

In combination with the exhaust-pipe of a steam-engine, apipe throughwhich water is discharged into the exhaust pipe to mingle with thesteam.

JOHN J. GILBERT.

Witnesses:

E. H. DENNIS, WM. T. DENNIS,

